AutoCodes – Toyota – C1645 Toyota

C1645 Toyota Code - Power Steering Control System Failure

Quick Answer

This Diagnostic Trouble Code (DTC) is stored when the Parking Assist ECU receives a malfunction signal from the power steering system via CAN communication. Common causes include Faulty Power Steering System. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: C1645 Toyota indicates Power Steering Control System Failure.
Common causes: Common causes include Faulty Power Steering System.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 4,699

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 15, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C1645 Toyota Description

This Diagnostic Trouble Code (DTC) is stored when the Parking Assist ECU receives a malfunction signal from the power steering system via CAN communication.

OBDII Code C1645 Toyota - Power Steering Control System Failure - AutoCodes.com — C1645 Toyota Code - Power Steering Control System Failure

What does this mean?

What are the Possible Causes of the DTC C1645 Toyota?

Faulty Power Steering System

How to Fix the DTC C1645 Toyota?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1645 Toyota code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need more information on how to fix the C1645 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1645 Toyota code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1645 Toyota Code

1. What are the common symptoms of OBDII code C1645 in a Toyota related to Power Steering Control System Failure?

The common symptoms include difficulty steering, heavy steering feel, power steering failure, and illuminated warning lights on the dashboard.

2. What are the possible causes of OBDII code C1645 in a Toyota indicating Power Steering Control System Failure?

Possible causes include a faulty power steering control module, damaged wiring or connectors in the power steering system, low power steering fluid levels, or a malfunctioning power steering pump.

3. How can I diagnose OBDII code C1645 in a Toyota for Power Steering Control System Failure?

Diagnosis typically involves using a diagnostic scanner to retrieve the trouble codes, performing visual inspections of the power steering components, checking power steering fluid levels, and testing the power steering control module.

4. Is it safe to drive my Toyota with OBDII code C1645 related to Power Steering Control System Failure?

It is not recommended to drive the vehicle when experiencing power steering issues as it can lead to difficulty controlling the vehicle, especially at lower speeds or during maneuvers.

5. How can I repair OBDII code C1645 in a Toyota for Power Steering Control System Failure?

Repair options may include replacing the power steering control module, repairing or replacing damaged wiring or connectors, topping up power steering fluid, or addressing any other specific issues identified during diagnosis.

6. Can a DIY enthusiast fix OBDII code C1645 in a Toyota indicating Power Steering Control System Failure?

While some basic inspections can be done by a DIY enthusiast, diagnosing and repairing power steering control system issues may require specific tools and expertise, so it's often best left to professionals.

7. How much does it typically cost to repair OBDII code C1645 in a Toyota related to Power Steering Control System Failure?

The cost of repair can vary depending on the specific issue causing the code, the parts needed, and labor costs. It's recommended to get a diagnostic assessment from a qualified mechanic for an accurate estimate.

8. Will resetting the OBDII code C1645 in a Toyota resolve the Power Steering Control System Failure issue?

Resetting the code may temporarily clear the warning lights, but it will not fix the underlying problem causing the power steering control system failure. It's essential to diagnose and address the root cause of the issue.

9. How long can I safely drive my Toyota with OBDII code C1645 related to Power Steering Control System Failure before getting it repaired?

It's best to address power steering issues promptly to ensure safe driving conditions. Continued driving with power steering problems can lead to further damage and safety risks, so it's advisable to have the vehicle inspected as soon as possible.

10. Can extreme weather conditions affect OBDII code C1645 in a Toyota related to Power Steering Control System Failure?

Extreme temperatures or weather conditions can potentially exacerbate power steering issues, as cold weather may impact power steering fluid viscosity or electrical components, while heat can stress the power steering system components.